25911961090 has 16 divisors (see below), whose sum is σ = 46648548288. Its totient is φ = 10363224816.

The previous prime is 25911961073. The next prime is 25911961093. The reversal of 25911961090 is 9016911952.

It is not an unprimeable number, because it can be changed into a prime (25911961093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123942 + ... + 259201.

It is an arithmetic number, because the mean of its divisors is an integer number (2915534268).

Almost surely, 2^25911961090 is an apocalyptic number.

25911961090 is a deficient number, since it is larger than the sum of its proper divisors (20736587198).

25911961090 is a wasteful number, since it uses less digits than its factorization.

25911961090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389913.

The product of its (nonzero) digits is 43740, while the sum is 43.

The spelling of 25911961090 in words is "twenty-five billion, nine hundred eleven million, nine hundred sixty-one thousand, ninety".